一个类与其ProtectionDomain之间的映射是在类第一次装载时设置的，并在类被垃圾收集之前不会改变。
The mapping between a class and its ProtectionDomain is set up when the class is first loaded and will not change until the class is garbage collected.
SOS儿童村将不会改变您的计算机设置，除非你问它这样做，在发生问题。
SOS will not alter your computer Settings unless you ask it to do so in the event of problems.
特别是IE设置一旦设定之后，可能长期都不会改变，因此不如彻底冰封！
Especially IE setting once after set, the likelihood won't be changed for a long time, because this is inferior to thorough anchor ice sealing!
这样将改变系统设置但不会改变你的控件。
这样将改变系统设置但不会改变你的控件。
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